diff --git a/usr.sbin/bhyve/Makefile b/usr.sbin/bhyve/Makefile
--- a/usr.sbin/bhyve/Makefile
+++ b/usr.sbin/bhyve/Makefile
@@ -40,7 +40,6 @@
 	pci_emul.c		\
 	pci_hostbridge.c	\
 	pci_nvme.c		\
-	pci_passthru.c		\
 	pci_virtio_9p.c		\
 	pci_virtio_block.c	\
 	pci_virtio_console.c	\
diff --git a/usr.sbin/bhyve/amd64/Makefile.inc b/usr.sbin/bhyve/amd64/Makefile.inc
--- a/usr.sbin/bhyve/amd64/Makefile.inc
+++ b/usr.sbin/bhyve/amd64/Makefile.inc
@@ -15,6 +15,7 @@
 	pci_hda.c	\
 	pci_irq.c	\
 	pci_lpc.c	\
+	pci_passthru.c	\
 	pci_uart.c	\
 	pci_xhci.c	\
 	pctestdev.c	\
diff --git a/usr.sbin/bhyve/pci_emul.c b/usr.sbin/bhyve/pci_emul.c
--- a/usr.sbin/bhyve/pci_emul.c
+++ b/usr.sbin/bhyve/pci_emul.c
@@ -59,8 +59,8 @@
 #ifdef __amd64__
 #include "amd64/pci_irq.h"
 #include "amd64/pci_lpc.h"
-#endif
 #include "pci_passthru.h"
+#endif
 #include "qemu_fwcfg.h"
 
 #define CONF1_ADDR_PORT	   0x0cf8
@@ -381,7 +381,11 @@
 	if (config == NULL) {
 		return def;
 	} else if (host_sel != NULL && strcmp(config, "host") == 0) {
+#ifdef __amd64__
 		return pci_host_read_config(host_sel, reg, size);
+#else
+		errx(1, "cannot fetch host PCI configuration");
+#endif
 	} else {
 		return strtol(config, NULL, 16);
 	}